package com.itheima.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.domain.Employee;
import com.itheima.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    @PostMapping("/login")
    public R<Employee> login(HttpSession session, @RequestBody Employee employee){
        //1、将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper<>();
        lqw.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(lqw);

        //3、如果没有查询到则返回登录失败结果
        if (emp == null){
            return R.error("登陆失败");
        }
        //4、密码比对，如果不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)){
            return R.error("登陆失败");
        }
        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus() == 0){
            return R.error("账号已禁用");
        }
        //6、登录成功，将员工id存入Session并返回登录成功结果
        session.setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     */
    @PostMapping("/logout")
    public R<String> logout(HttpSession session){
        //清理Session中保存的当前登陆员工的id
        session.removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工,员工信息:{}",employee.toString());
        //设置初始密码123456，需要进行md5加密处理
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());//设置创建当前时间
//        employee.setUpdateTime(LocalDateTime.now());//修改当前时间
//        //获得当前登录用户的id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//
//        employee.setCreateUser(empId);//设置创建时间
//        employee.setUpdateUser(empId);//设置修改时间

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 员工分页查询
     */
    @GetMapping
    public R<Page> page(int page,int pageSize,String name){
        log.info("page= {},pageSize= {},name= {}",page,pageSize,name);
        //构建分页查询器
        Page pageInfo = new Page(page,pageSize);

        //条件构造器
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper();
        //添加查询条件
        lqw.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        lqw.orderByDesc(Employee::getUpdateTime);

        employeeService.page(pageInfo,lqw);
        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        //获取登录用户id
//        Long empId = (Long) request.getSession().getAttribute("employee");
//
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);

        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee byId = employeeService.getById(id);
        if (byId != null){
            return R.success(byId);
        }
        return R.error("没有查询到员工信息");
    }
}
